Medicaldata privacy protection scheme supporting controlled sharing

被引：0
|
作者：
Guo Q. [1 ,2 ]
Tian Y. [1 ,2 ,3 ]
机构：
[1] College of Computer Science and Technology, Guizhou University, Guiyang
[2] Guizhou Provincial Key Laboratory of Public Big Data, Guiyang
[3] Institute of Cryptography and Data Security, Guizhou University, Guiyang
来源：
Xi'an Dianzi Keji Daxue Xuebao/Journal of Xidian University | 2024年 / 51卷 / 01期
关键词：
blockchain; controlled sharing; medical data; privacy protection; proxy re-encryption;
D O I：
10.19665/j.issn1001-2400.20230104
中图分类号：
学科分类号：
摘要：
The rational use of patient medical and health data information has promoted the development of medical research institutions.Aiming at the current difficulties in sharing medical data between patients and medical research institutions,data privacy is easy to leak,and the use of medical data is uncontrollable,a medical data privacy protection scheme supporting controlled sharing is proposed.Firstly,the blockchain and proxy server are combined to design a medical data controlled sharing model that the blockchain miner nodes are distributed to construct proxy re-encryption keys,and the proxy server is used to store and convert medical data ciphertext,and proxy re-encryption technology is used to bring about the secure sharing of medical data while protecting the privacy of patients.Secondly,a dynamic adjustment mechanism of user permissions is designed that the patient and the blockchain authorization management nodes update the access permissions of medical data through the authorization list to realize the controllable sharing of medical data by patients.Finally,the security analysis shows that the proposed scheme can bring about the dynamic sharing of medical data while protecting the privacy of medical data,and can also resist collusion attacks.Performance analysis shows that this scheme has advantages in communication overhead and computing overhead,and is suitable for controlled data sharing between patients or hospitals and research institutions. © 2024 Science Press. All rights reserved.
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页码：165 / 177
页数：12
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